Sewing-machine



No. 620,|34. Patented- Feb. 287 |899.

S. G. HOWE. SEWING MACHINE.

(Applition-led Sept. 10, 1897.) (No Model.) 5 Sheets-Sheet l.

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No. 620,|34. Patented Fb. 28', |899. S. G. HDWE.

SEWING MACHINE. (Application led Sept. 10, 1897.)

5 Sheets-Sheet 2.

(No Mqdel.)

illll No. a2o,|34. Patenten Feb. 2s, |899'. s. G. Howe.

SEWING MACHINE.

(Application led Sept. 10, 1897.)

(No Model.) y 5 `Sheets-Sheet 3.

////////////////////l 'l 5 :FIL lmlq@ No. 620,!34. Patented Feb. 28, |899.

S. G. HOWE.

SEWING MACHIN'E., (Applicatibn led Sept. 10, 1897.) l

5 Sheets-Sheet 4. l

(No Model.)

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S. G. HUW'E.

SEWING MACHINE.

(Application led Sept. 10, 1897.) (No Model.) 5 Sheets-Sheet 5.

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SOLON G. I'IOWE, OF DETROIT, MICHIGAN, ASSIGNOR TO JEROME WV. HYDE,

OF SPRINGFIELD, MASSACHUSETTS.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 620,134, dated February 28, 1899. Application iiled September 10,1897. Serial No. 651,240. (No model.)

T a/ZZ whom it may concern,.-

Beit known that I, SOLON G. HOWE,'a citizen of the United States, residing at Detroit, county of Wayn-e, State of Michigan, have invented a certain new and usefullmprovement in Sewing-Machines; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to 1o make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

My invention has for its object certain new and useful improvements in sewing ma- 15 chines, and has reference more particularly to that class of machines used in overseaming furs, gloves, and for analogous uses.

To this end my invention consists of the construction and arrangement of devices and 2o appliances herein described, and illustrated in the accompanying drawings, in which Figure 1 is a vertical section showing parts in elevation. Fig. 2 is a plan view showing a feature in horizontal section. Fig. 3 is a z5 partial side elevation showing the mechanism' for operating the outer feed-disk. Fig.

4 is a view in section on the line 4 4, Fig. 3.

Fig. 5 is a view in section on the line 5 5, Fig.

2. Fig. 6 is a detail view of the eccentric 6.

3o Fig. 7 is a detail View of the eccentric 7. Fig.

8 is a detail View of the eccentric 8. Fig. 9

is an enlarged view of one of the eccentrics for operating the friction-disk controlling the rotation of the inner feed-disk. Fig. 10 is a 3 5 horizontal section showing parts in plan. Fig. 11 is a detail view of the cam 9 on the driving-shaft. Fig. 12 is a partial front eleva tion showing the trip-lever for operating the outer feed-disk. Fig. 13 is a view in section 4o on the line 13 13, Fig. 2. Fig. 14 is a detail View showing the ball-and-socket joint in the looper-bar, parts being shownin section. Fig. 15 is a view of said joint at right angles to Fig. 14. Fig. 16 isa vertical section on the line 16 16, Fig. 2. Fig. 17 is a view, partly in vertical section and partly in elevation, showing features of my invention. Fig. 1S is a view, partly in section and partly in elevation, at right angles to Fig. 17.

I carry out my invention as follows: A represents any suitable case, which may be supported upon any suitable table A', said case being provided with a base A2 and top A3.

B denotes the driving-shaft, driven in any suitable manner, as by a pulley b.

C is the needle-bar, provided with a yoke O, having arms C2 embracing an eccentric 8 upon the driving-shaft.

O3 is the needle engaged with the needlebar.

D and D' represent the inner and outer feeding-disks, the inner feeding-disk being carried by the rotatable feed-shaft D2, supported upon a friction-disk D3, said disk being-constructed with a groove d, in which project eccentrics CZ cl2, journaled upon alever D4. An additional eccentric d3 bearsupon the periph- .ery of the friction-disk D3 to prevent backward movement of the same. The springs d4 hold the corresponding eccentrics d', cl2, and cl3 to their work.

A4 is a spool-spindle, preferably supported upon a receptacle A5, provided with an orifice a5, through which the thread passes. l

G is any suitable tension device.

G is the thread.

H is the work. p

D5 is the arm or bar carrying the outer feeddisk.

E indicates the looper-bar,and E the looperarm. The looper-barE is preferably formed of two parts, (indicated by the numerals 1 and 2,) having a ball-and-socket-joint connection one with 4another at their adjacent ends in any suitable manner. As shown, the part 1 may be provided with a ball e, the part 2 being provided with a corresponding socket, (indicated at e'.) This socket may conveniently be constructed of two socketed plates (indicated by the numeral 3) held in place by a rivet 4, passed through the part 2 of the looper-bar. By this construction the ball end of the portion 1 of said bar may readily be engaged in place.

It will be understood that, as in the other application referred to, the looper-arm E', being in the position indicated in Fig. 1, is iirst given a forward rocking movement toward the thread to pick up the loop. It is then to be given an upward movement, then a backward movement toward the disk D, and then a downward movement into position for the IOO ro movement is given to the looper-bar. Provision for this rigidity for said rocking movement is made by providing the ball e With a spur e2, projecting into a corresponding opening e3 in the adjacent plate 3.

Horizontal reciprocatory movement is given to the looper-bar by means of an arm E2, provided with a cam-roll e4, projecting into a cam-groove e5 in the cam-disk 9 upon the driving-shaft. To this end the machine is provid ed with a slide 12, made horizontally reciprocatory in the case of the machine, the case preferably being provided with bushings 13 to take the wear, the arm E2 being engaged with the slide 12, said bar E2 being preferably constructed with a yoke 14, engaged upon the slide 12, and with the part 2 of the looper-bar, as shown more particularly in Fig. 16. The arm E2 is preferably made integral with the yoke 14 and depends from said yoke.

While the needle is being moved forward through the loop and While the needle is being drawn back to form the loop the looperarm is required to be motionless longitudinally. Provision is made for this motionless attitude of the looper-arm at required points by the shape of the cam-groove e5.

To give an upWard-and-doWnWard movement to the looper-bar, the same is provided with a bearing E2, having a vertical reciprocation in a portion of the case, through which bearing the looper-bar is horizontally reciprocatory. To vertically reciprocate said bearing, the machine is provided with a leverE4, fulcrumed in any suitable manner at one extremity thereof, as at el, said lever being connected at its opposite end `with the bearing E2, as by means of a connecting-rod E5. The bar E4 rides upon the periphery of an eccentric 7 upon the driving-shaft. The arm E4 is retracted by means of a retracting-spring E,

A rocking movement is given to the looperbar by means of a lever-arm E7, fulcrumed at one extremity, as indicated at e7, said arm:

riding upon the periphery of an eccentric 6. The arm E7 is retracted by a spring cl2. The lever-arm E7 is connected with a vertical arm E2, connected with a horizontal arm E2, keyed upon the portion 2 of the looper-arm E. This may readily be effected by providing a sleeve e8, -having adjacent edges turned inward to form a key e, projecting into a corresponding keyway in the looper-bar, as indicated more particularly in Fig. 5. The portion 2 of the looper-bar, it will be understood, must play longitudinally through the sleeve e2. The

4sleeve e8 is preferably constructed with a collar @10 at its inner end and a set-screw e, that holds the arm E9 as Well as the sleeve in place, at the opposite end of the sleeve.

The arm carrying the outer feed-disk is provided With a needle-guide 15 and the needlebar With a tension device G2.

To reciprocate the arm D5 to open the feeddisks and to compress the outer feed-disk against the inner disk, I provide a lever F, fulcrumed to the case, as indicated at f, said lever being connected with the arm D5 by a connecting-rod F', jointedly connected to the lever F, as indicated at f. The rear end of the arm D5 is constructed to form a spring housing or case, (indicated at D2) in which is located a retracting-spring D7. The inner end of the spring-case is open, permitting the spring to project therethrough, as indicated in Fig. 13, and abut against a bracket A4, forming a part of the case A and supporting the arm D5. The spring-case terminates a suiicient distance from the bracket A4 to permit the arm D5 to move a required distance in a direction toward the bracket, such movement compressing the spring.

The spring-case or rear end of the arm D5 is constructed with aboss and pin, (indicated at di) upon which the adjacent end of the connecting-rod F is engaged and held in place in any suitable manner, as by a key d?. The tension of the spring may be regulated by an adjusting-screw D2.

To lock the outer disk in open position, I provide a locking-lever J, fulcrumed, as at j, and provided with ashoulderj' to engage under the lever F when the disk is in open position and prevent said disk closing until the locking-lever J is removed from locked position. This locking-lever preferably projects downward through the supporting-table A', as through an opening a, in which position the locking-lever may readily be thrown out of engagement with the lever F by theknee of the operator. I prefer also to provide a cap K, secured at its lower side tothe inside face of the case A, as by screws 7c, said cap extending underneath the arm D5 and embracing its outer vertical surface opposite the case and having engagement upon the upper face Vof the arm Di and by means of which thearm D5 is securely held in position. Said cap preferably has an adjustable engagement with the case A, which may be provided for by constructing the case with elongated orifices a2, through which the screws 7a pass. Adjustingscrews 7s are also provided to bear against the adjacent face of the arm D5. l

To actuate the feeding mechanism already described, a bell-crank lever L is provided, fulcrumed as at l, one arm of which rides against an eccentric upon the driving-shaft. The other arm of the lever L is connected with a lever D", hereinbefore mentioned, by means of a connecting-arm L.

L2 is a retractin g-sprin g connected with the lever L.

To adj ust the length of the stitch, I provide an adjusting-screwM, connected with the le- TOO IIC

ver L and passed through the adjacent porl ing a4 in the case A of the machine, the adjacent edges of the case preventing said lever-arms from lateral disengagement from the socket in its cap, while the form of socket in the cap will obviously prevent the vertical disengagement of said lever-arms upon said caps. To compensate for any possible wear upon the eccentrics or the wearing side of said lever-arms, said caps may be made vertically adj ustablein the openings a4. The caps preferably project over the outer face of the case A, as shown in Fig. 1, and are adjustably held in place by means of a bolt n and a capnut n', the nut bearing upon the inner face of the case.

By reference to Figs. 1 and 2 particularly it will be seen that the arm D5 is bent upward at its forward end and then laterally downward and forward beyond the outer feedingdisk and then inward, as shown, horizontally toward the outer disk, the horizontal portion of said arm projecting inward beneath the outer feeding-disk to support said disk. This upward and lateral bending of said arm provides freedom of movement upon the part of the operator in handling the Work, inserting and adjusting the work, giving ample room for the hands of the operator about the disks.

The sleeve et3 is obviously held from backward movement by the collar el", which has bearing against the inside of the case A. Said sleeve is also held from contrary movement by meansof the shoulder of the horizontal arm E bearing against the outer face of the case, as indicated in Figs. 1 and 2, for eX- ample.

By providing the arm D5 with aspring-housing, which is preferably formed integral with said arm, and providing the outer end of said case with an adj Listing-screw tapped thereinto I provide a very small economical means of effecting the required adjustment of the screw and the retraction of said arm, while also the parts are out of any possible contact with the work in the operation of the machine.

The operator actuating the outer or pressure feed-disk D' may use a knee-lever on the under side of the table, if desired, my invention contemplating a lever (indicated by the numeral 20) fulcrumed to the case of the machine, the upper end of said lever being engaged with the reciprocatory arm D5, the lower end of said lever 20 being suitably connected with a swinging lever 22, provided with an adjustable knee-rest 23, said rest being adjustable by means of a screw 24. The kneerest is located about the center of the machine, and so will operate the arm D5 on either side of the machine-case. Being adjustable, the knee-rest may be set up close to the table or lowered, as circumstances may require.

The lever 22 may be fulcrumed in any suitable manner, as indicated at 25, and at its opposite end it is preferably provided with a swivel-bearing (indicated at 26) engaging the lower end of the lever 20, which bearing allows for oscillations of the levers 20 and 22, both said last-named levers having an oscillatory motion about their fulcrums. The swivel-bearing 26 is preferably provided with an opening (indicated at 27) in its upper end to engage the lower end of the lever 20, the

opening being constructed to provide for a desired amount of play of the parts adjacent, as indicated more particularly in Fig. 18.

In Figs. 17 and 18 I further provide a fulcrum-plate (indicated at 28) upon the under side of the table in order to give greater rigidity to the lever 22 at its fulcrumed end, a screw 29 engaging ina shoulder 30 of said plate, with an intervening washer 31 holding the lever 22 in place.

The means shown in Figs. 17 and 18 for operating the outer feed-disk are preferred, the means shown in Figs. 2, 3, 4, and 13 illustrating modifications of my invention.

What I claim as my invention is-' l. In a sewing-machine, the combination of a pair of feeding-disks, an arm carrying the outer feed-disk extending to the rear of the case and constructed with a spring housing or case toward its rear end, a lever to actuate said arm, a retracting-spring within said housing projecting forward therefrom and contacting at one end against an adjacent portion of the case, and an adjusting-screw engaged in the rear end of said housing outside said case, substantially as described.

2. In a sewing-machine, the combination of a pair of feeding-disks, an arm carrying the outer feed-disk extending to the rear of the case and constructed with a spring-housing .toward its rear end open at its inner end, a

lever to actuate said arm, aretracting-spring having one end located in the spring-housingand its opposite end projecting therebeyond and contacting with the case of the machine, and an adj Listing-screw engaged in the rear end of said housing to regulate the tension of the spring, said housing terminating a sufficient distance from the case of the machine at its forward end to permit the forward movement of the arm and compress the spring, substantiallyas set forth.

3. In a sewing-machine, the combination of a looper-bar constructed of two parts jointedly connected at their adjacent ends, means.

to give to both parts of said bar a horizontally-reciprocatory movement, means to give to both parts of said bar a rocking Inove- IOO IIO

ment, and means to give to the forward part of said bar an upward-and-downward movement independently of the rearward part of said bar, for the purposes described.

4. In a sewing-machine, the combination of a looper-bar constructed of two parts jointedly connected, means to give to both parts of said bar a rocking movement, means to hold the jointed parts of said bar together, whereby they may both be given a rocking movement simultaneously, mechanism to give to both parts of said bar a reciprocatory movement, and means to give to the forward of said parts an upward-and-downward movej ment independently of the other of said parts, substantially as set forth.

5. In a sewing-machine, the combination of a looper-bar constructed of two parts connected with a ball-and-socket joint, one of said parts provided with a ball end, and the other of said parts provided with socketed plates engaged therewith over said ball end, mechanism to give to both parts of said bar a reciprocatory movement, and means to give to the forward of said parts an npward-and-downward movement independently7 of the other of said parts, substantially as set forth.

6. In a sewing-machine, the combination of a looper-bar constructed of two parts connected with a ball-and-socket joint, one of said parts provided with a ball end and the other of said parts provided with socketed plates engaged therewith and over said ball end, said plates provided with an opening therein, and the ball end provided with a spur projecting into said opening, means to give to said looper-bar a rocking movement, mechanism to give to both parts of said bar a reciprocatory movement, and means to give to the forward of said parts an upward-and-downward movement independently of the other of said parts, substantially as set forth.

7. In a sewing-machine, the combination of a looper-bar, a slide, an arm provided witha yoke engaging both said bar and slide, a driving-shaft, and a cam upon said shaftto actuate said arm to give a horizontal reciprocation to said looper-bar, said looper-bar having a rocking movement within said yoke, substantially as set forth.

S. In asewing-machine, the combination of a looper-bar, a driving-shaft, an eccentric upon said shaft, a lever-arm f ulcrumed to the case actuated bysaid eccentric, avertical arm connected with said lever-arm, a horizontal arm connecting the vertical arm with said looper-bar to rock the looper-bar, said bar provided with a sleeve between the end of said arm and the horizontal arm, said sleeve keyed to said bar, and means to hold said horizontal arm in place upon said sleeve and looper-bar, substantially as set forth.

9. In a sewing-machine, the combination of a looper-arm, a driving-shaft, an eccentric upon said shaft, a lever-arm fulcrumed to the case actuated by said eccentric, a vertical arm connected with said lever-arm, a horizontal arm connected with the vertical arm and with the looper-bar to give a rocking movement to said bar, said bar provided with a sleeve between the adjacent end of the horizontal arm and the looper-bar and keyed to said bar, and means to hold the horizontal arm in place upon said sleeve and looper-bar, said sleeve provided with a collar engaged against the inner face of the case of the machine, the adjacent end of the horizontal arm engaging against the outer face of said case, for the purposes described.

10. In a sewing-machine, the combination of a looper-bar, a driving-shaft, a slide, an arm constructed with a yoke sleeved upon both said bar and slide, means to hold the bar and slide longitudinally immovable in said yoke, a cam upon said shaft to actuate said arm to give a horizontal reciprocation to said looper-bar, a bearing upon said looperbar, a lever-arm connected with said bearing to give an upward-and-downward movement to said bar, an eccentric upon the drivingshaft to actuate said arm, a spring to retract said arm, a lever-arm connected with the looper-bar to give to said bar a rocking movement, an eccentric upon said shaft to actuate the last-named lever-arm, and a spring to retract said latter arm, said looper-bar having a rocking movement in said yoke, substantially as set forth.

l1. In a sewing-machine, the combination of a looper-bar, a lever-arm connected with said bar to give to said bar an upward-anddownward movement, a lever-arm connected with said looper-bar to give to said bar a rocking movement, a driving shaft, eccentrics upon the driving-shaft to actuate each of said lever-arms, and caps adjustably connected with the case of the machine, in which said lever-arms, respectively, are fulcrumed, substantially as set forth.

12. In a sewing-machine, the combination of a pair of feeding-disks, a reciprocatory arm carrying one of said disks, a lever to actuate said arm, a swinging lever fulcrumed to the case, a swivel-bearing connecting the two levers, and a knee-rest connected with the swinging lever, substantially as set forth.

13. In a sewing-machine, the combination of a pair of feeding-disks, a reciprocatory arm carrying one of said disks, a lever engaged at its upper end with said arm, a swinging lever fulcrumed to the case, a swivel-bearing connecting the two levers, and a knee-rest adjustably connected with the swinging lever, substantially as set forth.

14:. In a sewing-machine, the combination of two feeding-disks, a reciprocatory arm carrying one of said disks, a lever engaged at its upper end with said arm, a bearing-plate engaged with the case of the machine, a swinging lever fulcrumed upon said bearing-plate, and swivel-bearing connecting said swinging lever with the lower end of the first-named IOO IIO

lever to allow for oscillations of said levers, of the case of the machine, substantially as 1o substantially as set forth. set forth.

1,5. In a sewing-machine, the combination In testimony whereof I sign this specilicaof two feeding-disks, a reoiprooatory arm cartion in the presence of two witnesses. rying one of said disks, a lever engaged at its upper end with said arm, and centrally- SOLON G HOWE located knee-lever mechanism connected with Witnesses:

the lower end of said first-named lever, where- N. S. WRIGHT,

by said arm may be actuated from either side MARY HICKEY. 

